To investigate the resources, diversity and distribution of culturable mucoromycotan fungi in the Greater Khingan Mountains, 279 samples including dry branches and fallen leaves, humus, soil and faeces were collected from nine representative counties and cities. A total of 1,153 strains of mucoromycotan fungi were isolated using a dilution plate, cutting and direct incubation methods. Among the 1,153 strains, 706 representatives were analyzed on the basis of fungal molecular barcode ITS rDNA. These mucoromycotan fungi were classified into 3 orders, 8 families, 10 genera and 38 species. Dominant genera were Mortierella, Umbelopsis, and Mucor, while dominant species were Mortierella amoeboidea, Mucor hiemalis, and Umbelopsis isabellina. This paper also summarized all 26 genera of Mucoromycotina and Mortierellomycotina reported in China, and the distribution of the dominant genera and species of the Greater Khinggan Mountains were analyzed. In addition, regional distribution of all genera was analyzed with regard to three major ecological regions (Eastern wet and semi-humid ecological regions, northwestern arid and semi-arid ecological regions and the Tibetan Plateau alpine ecological regions). The results showed that nine genera were distributed in all the three regions. For endemic genera, nine were found in the Eastern wet and semi-humid ecological region, only one in northwestern arid and semi-arid ecological region, and none in the Tibetan Plateau alpine ecological regions.